Polyetherimide compositions, methods of manufacture, and articles formed therefrom

摘要

A method for the manufacture of a polyetherimide composition includes catalyzing the reaction of a dianhydride and an organic diamine with a catalyst selected from guanadinium salts, pyridinium salts, imidazolium salts, tetra(C6-24)aryl ammonium salts, tetra(C7-24 arylalkylene) ammonium salts, dialkyl heterocycloaliphatic ammonium salts, bis-alkyl quaternary ammonium salts, (C7-24arylalkylene)(C1-16alkyl) phosphonium salts, (C6-24aryl)(C1-16alkyl)phosphonium salts, phosphazenium salts and combinations thereof, optionally in the presence of a solvent.

主权项

1. A method for the manufacture of a polyetherimide composition, the method comprising catalyzing the reaction of a dianhydride and an organic diamine with a guanidinium salt catalyst, optionally in the presence of a solvent, to provide the polyetherimide composition comprising a residue of the catalyst and a polyetherimide;wherein
the dianhydride has the formula the diamine has the formula
H2N—R—NH2; and the polyetherimide has the formulawherein in the forgoing formulae:
T is —O— or a group of the formula —O—Z—O—, wherein Z is an aromatic C6-24 monocyclic or polycyclic moiety optionally substituted with 1 to 6 C1-8 alkyl groups, 1 to 8 halogen atoms, or a combination thereof; R is selected from an aromatic hydrocarbon group having 6 to 27 carbon atoms, a halogenated derivative thereof, a straight or branched chain alkylene group having 2 to 10 carbon atoms, a halogenated derivative thereof, a cycloalkylene group having 3 to 20 carbon atoms, a halogenated derivative thereof, a divalent group of the formula wherein Q1 is selected from —O—, —S—, —C(O)—, —SO2—, —SO—, and —CyH2y— and a halogenated derivative thereof wherein y is an integer from 1 to 5, and —(C6H10)z— wherein z is an integer from 1 to 4, and an aromatic hydrocarbyl moiety having from 1 to 6 aromatic groups; and n is an integer greater than 1; wherein the catalyst is present in an amount of 0.01 to 2 mole %, based on the moles of the diamine.